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K&N performance High-Flow Air Filters are engineered to improve engine performance by increasing airflow up to 50%. Unlike disposable paper filters which must be frequently replaced, K&N Air Filters are washable, reusable, and engineered to last for the life of your motorcycle, ATV, or Side-By-Side vehicle. K&N air filters are backed by our famous 10-Year/Million Mile Limited Warranty, and they provide an environmentally friendly way to reduce landfill waste by avoiding disposable filters. Engineered to fit easily into your factory air box, installation can be completed in a matter of minutes! K&N develops and tests each product on the world’s toughest race tracks, so we can bring the highest level of performance for your journey. Join the millions of customers who have saved money and improved performance by upgrading to K&N filtration. Fitment Information: 2004-2013 HARLEY DAVIDSON XL1200C Sportster Custom; 2010-2013 HARLEY DAVIDSON XL1200X Forty-Eight; 2011-2013 HARLEY DAVIDSON XL883L SuperLow; 2009-2013 HARLEY DAVIDSON XL883N Iron; 2007-2012 HARLEY DAVIDSON XL1200N Sportster Nightster; 2005-2012 HARLEY DAVIDSON XL883R Sportster Roadster; 2006-2011 HARLEY DAVIDSON XL1200L Sportster Low; 2004-2010 HARLEY DAVIDSON XL883C Sportster Custom; 2005-2010 HARLEY DAVIDSON XL883L Sportster Low; 2004-2008 HARLEY DAVIDSON XL1200R Sportster Roadster; 2004-2008 HARLEY DAVIDSON XL883 Sportster; 2007 HARLEY DAVIDSON XL50 50th Anniversary Sportster; 2006 HARLEY DAVIDSON XLH883 Sportster Custom